Melnikov, N.
Safety in opencast mining - Moscow MIR 1969 - 391p. : ill.
Index included
STRIP MINING
STRIP MINING-Safety measures
622.86:622.271 / M4
Safety in opencast mining - Moscow MIR 1969 - 391p. : ill.
Index included
STRIP MINING
STRIP MINING-Safety measures
622.86:622.271 / M4